Package org.springframework.messaging.support

Class ImmutableMessageChannelInterceptor

java.lang.Object

org.springframework.messaging.support.ImmutableMessageChannelInterceptor

All Implemented Interfaces:

ChannelInterceptor

public class ImmutableMessageChannelInterceptor
extends Object
implements ChannelInterceptor

A simpler interceptor that calls MessageHeaderAccessor.setImmutable() on the headers of messages passed through the preSend method.

When configured as the last interceptor in a chain, it allows the component sending the message to leave headers mutable for interceptors to modify prior to the message actually being sent and exposed to concurrent access.

Since:

4.1.2

Author:

Rossen Stoyanchev

Constructor Summary

Constructors

Constructor	Description
ImmutableMessageChannelInterceptor()

Method Summary

Modifier and Type	Method	Description
Message<?>	preSend(Message<?> message, MessageChannel channel)	Invoked before the Message is actually sent to the channel.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.springframework.messaging.support.ChannelInterceptor

afterReceiveCompletion, afterSendCompletion, postReceive, postSend, preReceive

Constructor Details

ImmutableMessageChannelInterceptor

public ImmutableMessageChannelInterceptor()

Method Details

preSend

public Message<?> preSend(Message<?> message,
 MessageChannel channel)

Description copied from interface: ChannelInterceptor

Invoked before the Message is actually sent to the channel. This allows for modification of the Message if necessary. If this method returns null then the actual send invocation will not occur.

Specified by:

preSend in interface ChannelInterceptor